package top.callname.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import top.callname.bean.AdminBean;

public class AdminLoginFilter implements Filter{

	@Override
	public void destroy() {
		
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		 HttpServletRequest req = (HttpServletRequest) request;  
		 HttpServletResponse res = (HttpServletResponse) response;  
		 AdminBean admin = (AdminBean) req.getSession().getAttribute("adminInfo"); 
		 String url = req.getRequestURI();
		 if(url.contains("login") || url.contains("index") || url.contains("js") || 
				 url.contains("css") || url.contains("adminManager")){
			//放行
			chain.doFilter(request, response); 
		}else{
			if(admin==null){
				//非法登录，或session超时
				res.sendRedirect( "login.jsp" );  	
			}else{
				//已登录过
				chain.doFilter(request, response); 
			}
		}
		
	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
	
	}

}
